Fantini Cosmi ZTTKR Manual

Fantini Cosmi Ikke kategoriseret ZTTKR

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Side 1/3

100

ZTTKR

Chrome thermostatic head with manual control

and built-in sensor for series 158...KR

The thermostatic valves automatically regulate the flow of hot water in the radiators according to the room temperature set on the

control knob, thus making each room independent. The use of valves with thermostatic heads allows the requirements of thermal

comfort to meet the needs of the user, thus obtaining significant savings in heating costs, as required by national and international

standards.

Temperature

adjustment

scale

Antifreeze

position

Connection Sensitive element

ZTTKR 8 ÷ 30°C 8°C M30x1.5mm with liquid

CHARACTERISTCS

Sensitive liquid element with built-in sensor.

Compact size and attractive design.

Hysteresis < 0.4 K.

Rotational limit selectors for pre-setting the adjustment range.

Low thermal inertia 18 min.

Head body in ABS.

Chrome finish.

Temperature adjustment range 8 ÷ 30°C.

Antifreeze position 8°C.

Standard connection M30x1.5mm

Maximum operating pressure 10 bar.

Maximum operating temperature 120°C.

Maximum differential pressure 1 bar.

Unalterable range -15°C ÷ +50°C.

Intermediate position “3” = 20°C.

Ring in CW 614 N UNI-EN 12164-98.

Dimensions (mm)

M30x1,5

Ø42

77 ÷ 82

101

Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

INSTALLATION

Horizontal installation to allow better heat exchange with the ambient.

Vertical installation DOES NOT allow the valve to work properly (figure 4).

Avoid direct exposure to sunlight and air currents (figure 1).

Do not let furnishings, such as shelves (figure 3), radiator covers or curtains (figure 5), or alcoves prevent the free circulation of

air.

HOMOLOGATION AND STANDARDS

The ZTTKR is classed as “a low thermal inertia” device and therefore meets the requirements set forth under the Decree of the Italian

Ministry of Economy and Finance dated 19 February 2007, “Provisions relating to deductions for energy upgrading costs of existing

buildings, pursuant to art. 1, paragraph 349, law 27/12/2006, no. 296”.

These installations are not correct since the thermostatic valve would assess a different temperature to the one in the room. For

proper system operation we recommend you install a pressure relief valve between the supply and return lines. To prevent excessive

noise, do not use thermostatic valves with Δp values higher than 0.2-0.25 bar.

OPERATION

The thermostatic head consists of a sensor (6) filled with highly expandable liquid. The liquid, which is inside the control knob (2), is

able to expand or shrink according to the increase or decrease in room temperature, noticing even the slightest variations. When the

surrounding temperature increases, the liquid expands and, through the axial thrust movement (3), affects the position of the shutter,

thus controlling the action of the valve. The flow of the heat transfer fluid can be regulated by opening and closing the valve. When the

temperature drops, the opposite happens thanks to the thrust generated by the return spring. The thermostatic head accurately keeps

the ambient temperature stable. The value is set by turning the control knob, the numbers on it correspond to a given temperature.

1. Body

2. Control knob

3. Piston

5. Locking ring

6. Liquid sensor

5 1 3 6 2

ASSEMBLY INSTRUCTIONS

Before installing the thermostatic head, turn the selector to

“6” to facilitate the subsequent installation operations:

Then unscrew the protective cap mounted on the radiator

valves.

Screw the brass ring of the thermostatic head on the

same body thread.

Then turn the selector to the desired temperature.

Produkt Specifikationer

Mærke:	Fantini Cosmi
Kategori:	Ikke kategoriseret
Model:	ZTTKR

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